Transmission



TRANSMISS ION Filed April 30, 1930 3 Sheets-Sheet 1 littoral Aug. 12, 1930. c. FhvAN DER SPEK ,5

{ TRANSMISSION Filed April 30, 1930 3 Sheets-Sheet 2 Aug. 12, 1930. c. F. VAN DER SPEK TRANSMISS ION Filed April 30, 1930 3 Sheets-Sheet 5 Patented Aug. 12,1930 a z ggg.

I CORKELISERANOISGUS'VAN 'nEm-SIPEK :QE TOEQNTO,LONTEEIQflNNADA v V .mmsmssmm Applicat ion med April 30,1930; Serial No. semiaridf ii caiiada 1auar ,2', 1ao.

The invention relates to improvementsin 17"0Fth hbirsii1g*18? Thishouhingis made transmissicns' as described in" the present ,in twouorjrrrore -parts to t'ake thennechanism specification and shownin the accompanying Shawn therein? Radiallj projecting, from drawingswhich :formpartof the same; said b'ossfin spacedi elaticn are pinsqas at19, V

5 The invention hasfcr its object the pr'o-vieachkofjwhi'chiis disposed inaslct as at 20, 55

sion of a variable speed transmission particu- SeFigures? 1% and 2E Theslbts are termed larly designed forautomobile engines alin-theenlargedendf*cf thestub shaftin he-li though italso appliesto other prime movers. eal fash'icn as il'hi'strated in Figure 1'; 'By" The invention consists essentially in'the this construction'gii-n therotation"ofthe'shaft" novel construction and arrangement ofparts thepins1a1'eaxiailymrged hytheislcts te' nore0 whereby frictien wheels are emp10yed"t(')"0bmally rprcdilce. a f6rcef*shiftingthe housing tain a variableweizefisespeed'as wellasthe 18away"%ff-o m* the =shaft theaxialnroveinenti usual variable forward speed; A wa'rysalbeing imited by the ie'ngthh'rfd angle of the ientfeature resides in'the-mannerofilocking sletsx '1 lathe frictionwvheels toebtain directforward Zr-is afshifter pivjoted at22to theenlarged 65 speed; r Y end l5 df'th e stub shaft lit'hndgslbttdat 23 Referring to the drawings, Figure his as to-receivefioneof the-pinsllQ. While in the" sectiOnaIeIe atiOn of the invention. drawings cnlyoneshifter is shown,vitvisto Figure Q-is a' section taken on the'1ine2-2 bennderstcod that-in practice therefwill' be ofFigurel'. I g i W as many asthere are pins'QxQ i is a( 01 12"1,rs1id-. To

Figure 31s across section taken 'on the line ably 'monnted "'nponthetshaft and engaged V 3 3"Of Figure 1. i v I With the shifter. TheQcQHarj is manually Figure l 'isa'isomewhat siinilanbut fragcontrolled by a? conventional shift levernot mentary section depicting one of the friction shown since'it-"m'ay 'bei ojfanywell' known 25 wheels in an angular position for aut0mati constriiction. Bymovementofthecollarin 75 cally returningtolowspeed onedirectionth'e shifter"throwsi'the'pirifor-; Figure 5lis a view of the toothedface of a wardlj iin theislbtfthus shifting (thehou'singj friction disc.- towards the'stu'b' shaft. 1 a

Figure G-isanledge view-thereof. 25 is a drivenshaft ji urnalIe'd at-One end-i Figure 7 is axsection of a shiftin'g mech= in the.bossl7candratthe'otherend in the' 8 anism; i a casing 1O"byn1eansfofftheanti frictionlbeab Figure 8is acdetail of anattached cone and 'h in -2e1.*- 27 f is aifldating'ring concentrically coll arthereoff a g l disp o'se'd' 'with respectto the shaft"25andlcon-' Like numerals offvreferenceindicate c013 taining' the-radially jc'urnalleidi bevel gears I respondlngflpartsi 111:- eachof thee figures 28,28, meshed withthe"dcnbl -crown gear throughout the1draw ngsar v 1 '28; Nrma11y;-.,m;dia11yextending from In? the drawings, the areferenceenumeral 10 3 each; offtlfehevell gears 28,128 is a liafflgg generallydenotesthescasewvhich is:c0nsltru(2t'=- attache'd thronghthe mediiinrqf afnhiversah ed; andarranged ito;;c0ntai11'the.:vari0us 1116011 I j oint 29f The t outr endcif Teach" of the ma; flianism; It hasfi fl ge w i h ifi m' diaRsHhftsEisijeui'nalled ifithe} musing; 1857 be; asrusuahsecuredrto thez'fly-vwheeliheusi ng bymeans' bfaniantf frictien haringgSOfitted v purposes-r I 1 7 3i: 1 32 shdfiblyrinoiifitedonit anfl heldfagaijist 5* liaiseaistubz shaitxzfumtakingf if' powdem" rOtatiOH- UY a Eey-"33E Alsicfimminted onihesei fremsthe primermnvertandzrmay directly shafts, but exteriorlji-"nf thehbusingareanti bolted, as -cust0n1ary', .tOT hexzflywheel fri'ctijmbeariiigs 34 the=inner"raeeswofWvhich inner end of the eshaftzi en-largedzfas at 1'5 are:seeuredte tlfesliaffiswh the onterirac'esa 1 drecessedatzrlfitmmeiyg m mebasge, are"fiispfimds to$eng8ge thanm1lar"fac"34" 'the friction wheels and provided with a toothed face on which teeth 36 are concentri: cally arranged. The disc has a central open;

ing 37 defined by a boss 38. Within the opening are radially disposed bevel gears 39 journalled in the boss 38 and inthe' member 40. The journal openings 41 of the boss are 7 turned by contact -therewith.- I

laterally elongated as at 42 to permit thedisc to axially move. Thev bevel gears 39 are, meshed with a like gear 43 keyed to'the driven shaft and laterally sustained; by the thrust bearing 44. The stationary case 10 has teeth 45 for engagement with those of thedisc as also has the housing 18 at 46.

Adverting to the friction discs, each is provided with a double integral collar 47 having grooves-48, 48". zThe gr0ove 48 is engaged: by

a yoke49 pivoted at 50 and integral with a counterweight 51 so disposed as to urge the discinwardly by centrifugal force, see Figure. 3. ,By this expedient the discs are automatically; returned to an; inner position forproducinglow speed. i

52 are radial rods jo'urnalled at their outer ends in swivelbearings 53 and in the vicinity of'their inner ends in like bearings 54.

Mountedeon the rods are shifters 55 engaged with-the groovesj48 of the collars 47 and' provided'with pins 56 fitted'in helical -chan-'- nels 57cut,in the rods.

.The inner-ends .of the rods are offset as at 58 ,andvenga-ge d lwithsa-cone 59 slidably mounted on the-driven shaft 25. The'conhnection may be made in any suitable manner,

such as by a ball-headed stud .60 lodged-ina T-slot 61, see Figure :7. 7

Secured to the cone is a bar 62 slidably disposed in a flute in the shaft 25. and'c onnected to the exterior shiftcollar 62'. The collar is manually controlled by a shift lever of any known type, not shown. r a l I In the operation, of the invention, as the driving torque acting against the inertia of the "housing 1 8" induces the slots 20 to urge' the housing awayjfrointhe stub shaft-so as .7 to force the. frictionwheels 32 into engage-y ment with, the friction disc 35, which in turn isshifted' so-a's toiforce its v teeth 36 into ens gage'inent wit hthosenofjthe case 10. Thedisc is thus held stationary and the friction wheels The radialfshafts 29mm iththe friction" wheels andtransmit their motion to thevgears :28, 28" 28", 3 9 and 43.. Since the gear 43 is keyed to the shaft 25, power is thus transmitted to the shaft from the prime mover.

To vary the speed of the shaft 25 the cone 59 is shifted by the collar 62. The movement of the collar turns the rods 52, feeds the shifters 55 therealong and changes the positions of the friction wheels: Coincidentally with the turning of the rods they are bodily swung together with the radial shafts to reverse the direction of rotation of the shaftg the speed varying proportionately to the extent of movement.

To t hrow the device into neutral, the collar 24 is slid' along the shaft14. This moves the housing 18 towards this shaft as previously recounted. This movement disengageslthe teeth ofthe disc from those of the casing lOand frees the friction wheels from the disc so that'no power is imparted to the driven shaft 25. :A -continuation of this movement howevercngages the anti-friction bearings 34 with the face 34 of the flange 34 and forcestheteeth of the housing 18 into engagement with those of the disc, thus lockingv the friction wheels against turning on their axis. This provides direct speed. Whenever the f-riction wheels are disposed beyond low speed position they are-automatically returned-upon release of the collar 62 by the'counterweights 511 r VVha-t I claim is a v r 1. A transmission consisting of friction wheels, radial? shafts s'lidably supporting the wheels, keys securing the wheels against independent rotation, a journalled housing rotatably su'p'pio'rting said, radial shafts, a 'driven shaft axially journalled in the housing bevel gearing, connecting said radial shafts to the driven shaft, a friction disc for contact with said friction wheels and floating1y;disposed"within said housing,*said disc I I having a toothed face for frictional engagestub shaft 14 is rotated the hous1ng1 8 turns therewithas a unit due to;the pins 19. The

ment-with teeth provided on said housing, a fixed case" surrounding the housing and having :teetlrfor engagement with those of the jdisc,-bea'rings mounted upon the outer endslofthe aforesaid radial shafts, means for "shifting the friction wheels on their shafts, a driving shaft, means connecting the drivingshaft to the housing in such a manner that the housing can be axially shiftedyand meansprovidingan annular face for engagement-w1th1sa1d bearings when the housing shifted in one direction. N

;2 A transmission consisting of friction 1 wheels, radial shaftsslidab'ly supporting the wheels, keys securing the wheels against independent rotation, a ournalled housing rotatably supporting said radial shafts, a driven shaft axially journalled in the housing, bevel gearing connecting said radial shafts to the driven shaft, a friction disc for contact with said friction wheels and floatingly disposed within said housing, said disc having a toothed face for frictional engagement with teeth provided 'on said housing, afixed case surrounding the housing and having teeth for engagement with those of the disc, bearings mounted upon the outer ends of the aforesaid radial shafts, rods journalled within the housing and extending parallel to the radial shafts, shifters borne thereby, pins fixed in said shifters and engaged in helical channels provided in the rods, collars integral with said friction wheels and connected to said shifter, a cone shifting mechanism for controlling said rods, a driving shaft, means connecting the driving shaft to the housing in sucha manner that the'housing can be axially shifted, andmeans providing an annular face for engagement with said bearings when the housing is shifted in one direction. p 7

3. A transmission consisting of friction wheels, radial shafts slidably supporting the wheels, keyssecuring the wheels against independent rotation, a j ournalled housing rotatably supporting said radial shafts, a driven shaft axially journalled in the housing, bevel gearing connecting said radial shafts to the driven shaft, a friction disc for contact with said friction wheels and floatingly disposed within said housing, said disc having a toothed face for frictional engagement wth teeth provided on said housing, a

fixed case surrounding the housing and hav-' ing teeth forengagement with those of the disc, bearings mounted upon the outer ends of the aforesaid radial shafts, rods journalled within the housing and extending parallel to the radial shafts, said rods being journalled for swivelling as well as rotary movement, shifters so mountedupon the rods as to be axially moved by their rotaryimotion, said shifters being adapted to shift the friction wheels, a manual control mechanism for said that the housing can be axially shifted, and means providing an annular face for engagement withsaid bearings when the housing is shifted in one direction.

4. A transmission consistingof friction wheels, radial shafts slidably supporting the wheels, keys securing the Wheels against in-,

ingly disposed within said housing, saiddisc having a toothed face for frictional engagement with teeth provided on said housing, a

fixed case surrounding the housing and having teeth for engagement with thoseof the disc, bearings mounted upon the outer ends of the aforesaid radial shafts, means for shifting the friction wheels on their shafts,

a driving shaft having an enlarged end, a boss integral with the housing and fitted in a recess in said enlarged end, pins projecting from the boss and lodgedin helical slots pro- CORNELIS FRANCISCUS VAN der SPEK.

dependent rotation,a journalled housing roing', bevel gearing" connecting said radial shafts to the driven shaft, a friction disc for j tatablysupporting said radial shafts, a driven shaft 'axiallyjournalled in the housf contact with said friction'wheels and float Signed at Toronto, Ontario, Canada, this 26th day of April, 1930. 

